." >> reporter: about a dozen years ago, stephanie goodell of somerville, massachusetts, was an assistant dean at a public university. she says she felt underpaid and tried twice to negotiate her salary but was only given about $2,000 more. and then, after she left, she looked up the school's published payroll data. >> i was replaced by my operations person. i'd had 12 years of experience in the field. he had had none, and he was given a salary that was $15,000 more than mine. >> reporter: what were you thinking when you found that out? >> was my work not valued? did he have negotiating skills that i didn't have? did he feel like he could go in and ask for more, for whatever reason, because that's what men do? >> the overall data keeps showing that there's still this enormous bias. >> reporter: evelyn murphy is massachusetts.tenant governor she's also an economist and an expert on the wage gap. murphy says while women are sometimes paid less than men for the exact same job, they also just earn less overall. according to the u.s. census, women working full-time in the united states earn ab